Gravel shaker



Se t. 9 ,1924.

F. LAUSCHER GRAVEL SHAKER Filed Nov. gs. 192 2 sham-shun. i

25 EN TOR.

' ATTORNEY.

FRANK LAUSOHER, OF TzO'WERS, MICHIGAN.

F F16 E GRAVIEL SHAKER.

Application filed November 26, 1923. Serial No. 677,034.

To all whom it may concern:

Be it known that I, FRANK LAUSCHER, a citizen of the United States, residing at Powers, in the county of Menominee and State of Michigan, have invented certain new and useful Improvements in Gravel Shakers, of which the following is a speclfication, reference being had to the accompanying drawings.

This invention relates to devices for shaking and sifting granular material, part1cularly gravel, and has for its object the provision of a novel power driven machme for this purpose which will efficiently operate to sort or sift gravel in a very rapld manner, the result being that a uniform grade or grades of material may be had.

An importantobject is the provision of a device of this character which is so constructed as to be readily portable whereby it may be easily conveyed from place to place where its use is desirable, it being unnecessary to disassemble the mechanism for the purpose.

Another, and more speclfic ob ect is the provision of a machine of this character which is so constructed that its base portion serves as a species of bin within which sifted material accumulates, the pieces of excessive size being discharged outwardly beyond one end of the device so that danger of accidental remixing will be avoided.

An additional object is the provision of a device of this character which will be simple and inexpensive to manufacture, easy to operate and control, positive in action, efficient and durable in service, and a general improvement in the art.

lVith the above and otherobjects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed,and illustrated in the accompanying drawings in which 2- Figure '1 is a side elevation of the device;

Figure 2 is'a front end view;

Figure'3 is a vertical section; and

Figure 41s a horizontal section on the line 44 of Figure 1.

Figure 5 is a detail section on the line 55 of Figure 3.

Referring more particularly to the drawings I have shown my device as comprising an upright frame which may be constructed of wooden beams or bars or of angle bars of any desired cross sectional configuration.

This frame is shown as consisting of longitudinal and transverse bottom sills 10 and 11 respectively, suitably secured at the lower ends of and supportin upright corner posts 12 which are connected bycross bars 13 and diagonally arranged brace bars 14:, all of which are located at the extreme'upper ends of the posts. Secured to the corner posts at the inner sides thereof and extending longitudinally of the frame are bars 15 which are preferably braced by means of diagonal brace bars 16 secured thereto at points spaced fromthe ends and also secured to the corner posts at the upper and intermediate portions thereof as clearlyindicated in Figure 1. It is also preferable to provide one side of the machine with a diagonal brace 17 which is secured to one corner post at its intermediate portion and which'isalso secured to the upper end of the other corner post at the same side of the frame. Obviously, if found necessary, more braces may be provided where needed and if desired some of those disclosed might be omitted in some instances, especially if the frame be constructed of angle iron.

Secured to the corner posts at one side of the machine are boards or-planks 18 which extend upwardly to a point substantially intermed ate the ends of the posts, and secured to these same posts-and alsoto the opposite posts are transversely arranged boards 19 I which'extend upwardly to substantially the same point as the longitudinal boards 18. By this construction it will be seen that the space defined within the frame by the boards 18 and 19 constitutes a species of storage bin within which the sifted material accumu-' lates.

Located within the confines of the frame and above the closed-in side and ends defined by the boards 18 a'nd19respectively is a rectangular frame 20 having any desired specific construction but here represented as including longitudinal bars '21 connected by cross bars 22 and'slats or cleats 23 secured to the undersides of the longitudinal bars. This frame 20 is mounted for oscillatory movement and is therefore suspended from the bars 15 by means of pivoted hangers 2 1. The mounting is such that the frame 20 may swing longitudinally but not transversely. The bottom of this movable frameis provided with a screen 25 of suitable mesh depending upon the fineness of the sifting desired.

Secured upon the top of the movable frame is a bOX like structure 26 which has one side 27, higher than the other 28 and formed of sections 29 and 30. Within the box are transversely arranged laterally inclined grate bars 31 engaged at one end between the sections 29 and 30 and having their other ends secured upon the side 28. It mgiht be mentioned in passing that the ends 32 and 33 of this box like structure are reinforced by longitudinally extending stay rods and that braces 35 may be provided secured to the end 32 and to the longitudinal bars 21.

The operating means for the shaker or movable frame comprises a shaft 36 extend-- ing transversely of the main frame at the lower end of the movable frame and journa led in suitable bearings 37 carried by two corner posts. This shaft is shown as equipped with a pulley 38 to which power may be applied by any suitable means for the purpose of operating the. mechanism. The central portion of the shaft is formed with a crank 39 upon which is engaged a bar l0 which constitutes a pitman, the bar being equipped with a bearing a1 for the crank. This bar or pitman extends longitudinally above the movable frame 20 and is pivotally connected at 42 with a cross bar 4-3 forming part of the movable frame 20.

in the operation, it is evident that when the shaft 36 is rotated the entire frame 20 will be swung or oscillated back and forth, the hangers 2 L permitting this movement. Material to be shaken or sifted is shoveled or otherwise dumped into the box 26 and it is evident that large rocks cannot pass through. between the grate bars, while at the same time these bars will operate to break up any lumps which are not solid stone. The material which passes between these grate bars drops onto the wire screen 25 and some of it, the fine matter, passes through the screen and accumulates within the bin like bottom of the device, the coarse pieces being discharged from the screen at the lower end thereof and falling outwardly beyond the bin so as to be incapable of mixing with the line material within the bin. Quite naturally the end 32 of the box 26 does not contact with the screen as it is essential that a space be provided for permitting the material on the screen to slide downwardly therealong during the shaking or agitating movement imparted to the entire movable frame by means of the crank and pitman connection.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and very inexpensive sifting or sorting device for gravel or other material and one which is readily portable so that it will be well adapted" for use on the farm as well as by contractors and builders and at gravel pits. The operation is bound to be rapid and the device will consequently be a great time and labor saver so that it should recommend itself to those having occasion to employ its services.

While I have shown and described the preferred embodiment of the invention it is. of course, to be understood that I re serve the right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

Vhat I claim is 1. A shaking machine of the character described comprising a stationary supporting frame including corner uprights and cross bars connecting the same, longitudinal bars connecting said uprights, a side wall secured to the uprights at one side, an end wall secured to the uprights at one end to define an accumulation bin, an inclined frame having its bottom slatted and covered with wire screen, hangers pivotally suspended from said longitudinal bars and pivotally connected with said inclined frame for permitting longitudinal oscillatory movement thereof, a crank shaft journaled on the up rights at one end, a pitman pivotally con nected with said inclined frame and con nected with the crank shaft, and a hopper mounted on the inclined frame and having a gratelike bottom.

2. A machine of the character described comprising a stationary frame having its lower portion closed except at one side whereby to define an accumulation bin, a movable frame mounted within said stationary frame and supported by pivoted hangers whereby to be capable of longitudinal oscillatory movement, said movable frame being provided with a wire screen covering the entire bottom thereof, crank and pitman means mounted on the stationary frame and connected with said movable frame for effecting swinging thereof, and a box like hopper receptacle carried by said movable frame and provided internally with grate bars, the side of the receptacle above the closed in side of the main frame being higher than the other side and said grate bars being correspondingly inclined.

in testimony whereof T hereunto my signature.

FRANK LAUSCHEE. 

